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      <img src="../logo.svg" class="logo" alt=""><h1>utility to check if a variable or term is in map_headernames and where</h1>
      <small class="dont-index">Source: <a href="https://github.com/USEPA/EJAM/blob/HEAD/R/varin_map_headernames.R" class="external-link"><code>R/varin_map_headernames.R</code></a></small>
      <div class="d-none name"><code>varin_map_headernames.Rd</code></div>
    </div>

    <div class="ref-description section level2">
    <p>utility to check if a variable or term is in map_headernames and where</p>
    </div>

    <div class="section level2">
    <h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">varin_map_headernames</span><span class="op">(</span></span>
<span>  query <span class="op">=</span> <span class="st">"lowinc"</span>,</span>
<span>  ignore.case <span class="op">=</span> <span class="cn">TRUE</span>,</span>
<span>  exact <span class="op">=</span> <span class="cn">FALSE</span>,</span>
<span>  cols_with_names <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"oldname"</span>, <span class="st">"apiname"</span>, <span class="st">"api_synonym"</span>, <span class="st">"acsname"</span>, <span class="st">"csvname"</span>,</span>
<span>    <span class="st">"ejscreen_csv"</span>, <span class="st">"rname"</span>, <span class="st">"topic_root_term"</span>, <span class="st">"basevarname"</span>, <span class="st">"denominator"</span>,</span>
<span>    <span class="st">"shortlabel"</span>, <span class="st">"longname"</span>, <span class="st">"description"</span>, <span class="st">"csvlongname"</span>, <span class="st">"api_description"</span>,</span>
<span>    <span class="st">"acs_description"</span>, <span class="st">"varlist"</span><span class="op">)</span></span>
<span><span class="op">)</span></span></code></pre></div>
    </div>

    <div class="section level2">
    <h2 id="arguments">Arguments<a class="anchor" aria-label="anchor" href="#arguments"></a></h2>


<dl><dt id="arg-query">query<a class="anchor" aria-label="anchor" href="#arg-query"></a></dt>
<dd><p>variable name or fragment (or regular expression) to look for in map_headernames
columns, looking within just column names listed in cols_with_names.
Or a vector of query terms in which case this returns one column per query term.</p></dd>


<dt id="arg-ignore-case">ignore.case<a class="anchor" aria-label="anchor" href="#arg-ignore-case"></a></dt>
<dd><p>optional, like in grepl()</p></dd>


<dt id="arg-exact">exact<a class="anchor" aria-label="anchor" href="#arg-exact"></a></dt>
<dd><p>set to TRUE for only exact matches</p></dd>


<dt id="arg-cols-with-names">cols_with_names<a class="anchor" aria-label="anchor" href="#arg-cols-with-names"></a></dt>
<dd><p>optional, colnames of map_headernames to check in</p></dd>

</dl></div>
    <div class="section level2">
    <h2 id="value">Value<a class="anchor" aria-label="anchor" href="#value"></a></h2>
    <p>data.frame of info about where query was found and how many hits.</p>
    </div>
    <div class="section level2">
    <h2 id="see-also">See also<a class="anchor" aria-label="anchor" href="#see-also"></a></h2>
    <div class="dont-index"><p><code><a href="varinfo.html">varinfo()</a></code></p></div>
    </div>

    <div class="section level2">
    <h2 id="ref-examples">Examples<a class="anchor" aria-label="anchor" href="#ref-examples"></a></h2>
    <div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">varin_map_headernames</span><span class="op">(</span><span class="st">"spanish"</span><span class="op">)</span></span>
<span><span class="fu">varin_map_headernames</span><span class="op">(</span><span class="st">"lowinc"</span><span class="op">)</span></span>
<span><span class="fu">varin_map_headernames</span><span class="op">(</span><span class="st">"pop"</span><span class="op">)</span></span>
<span><span class="fu">varin_map_headernames</span><span class="op">(</span><span class="st">"POV"</span>, ignore.case <span class="op">=</span> <span class="cn">T</span><span class="op">)</span></span>
<span><span class="fu">varin_map_headernames</span><span class="op">(</span><span class="st">"POV"</span>, ignore.case <span class="op">=</span> <span class="cn">F</span><span class="op">)</span></span>
<span></span>
<span><span class="fu">varin_map_headernames</span><span class="op">(</span> <span class="st">"traffic.score"</span>, exact <span class="op">=</span> <span class="cn">T</span><span class="op">)</span></span>
<span></span>
<span><span class="fu">varin_map_headernames</span><span class="op">(</span> <span class="st">"traffic"</span> <span class="op">)</span></span>
<span></span>
<span><span class="fu"><a href="https://rdrr.io/r/base/t.html" class="external-link">t</a></span><span class="op">(</span><span class="fu"><a href="varinfo.html">varinfo</a></span><span class="op">(</span><span class="st">"traffic.score"</span>, </span>
<span>  info <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"oldname"</span>,<span class="st">"apiname"</span>, <span class="st">"acsname"</span> ,<span class="st">"csvname"</span>, </span>
<span>  <span class="st">"basevarname"</span>, <span class="st">'shortlabel'</span>, <span class="st">'longname'</span>, <span class="st">'varlist'</span><span class="op">)</span><span class="op">)</span><span class="op">)</span></span>
<span></span></code></pre></div>
    </div>
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